PMC:7796344 / 609-727 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T7","span":{"begin":9,"end":17},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" Arabia. Methods: A cross sectional survey was administered to pilgrims from February to April 2019 at the departure l"}